One can absolutely print a 100% working suppressor with a everyday printer and non exotic filament. We are not talking about a couple shots from .22lr, but rather rifle rounds shooting FA. Check out the FNA (Fuck The NFA) on your favorite alternative video site.
I'm going with a much more simple motive. He had whatever breakdown it took and did what he did because he is batshit crazy. He convinced himself that he was in the right and no one would ever find him eating in Mcdonalds so there was no reason to hide anything.
Kinda like the printer dots on paper printers.
That kind of knee jerk reaction does less than COBIS. Give me 30 mins and I can flash a printer with generic "pre ban" frimware.
Correct, its a printed DD19.2 variant. We cannot guess where he came from, but as shady as his online presence is it could have been anywhere. It could have been built years ago and left either with someone or in a cache.
Regardless, flying with a checked pistol is no big deal. TSA does not...
It is strange its not in the magic evidence pizza box.
I think its a ChairmanWon 19.2. for guesses on the the suppressor I'm going with a K-CAD. Keeping everything the same technology vintage.